155939Snsouch/*- 255939Snsouch * Copyright (c) 2002-2003 Networks Associates Technology, Inc. 355939Snsouch * Copyright (c) 2004-2011 Dag-Erling Sm��rgrav 455939Snsouch * All rights reserved. 555939Snsouch * 655939Snsouch * This software was developed for the FreeBSD Project by ThinkSec AS and 755939Snsouch * Network Associates Laboratories, the Security Research Division of 855939Snsouch * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 955939Snsouch * ("CBOSS"), as part of the DARPA CHATS research program. 1055939Snsouch * 1155939Snsouch * Redistribution and use in source and binary forms, with or without 1255939Snsouch * modification, are permitted provided that the following conditions 1355939Snsouch * are met: 1455939Snsouch * 1. Redistributions of source code must retain the above copyright 1555939Snsouch * notice, this list of conditions and the following disclaimer. 1655939Snsouch * 2. Redistributions in binary form must reproduce the above copyright 1755939Snsouch * notice, this list of conditions and the following disclaimer in the 1855939Snsouch * documentation and/or other materials provided with the distribution. 1955939Snsouch * 3. The name of the author may not be used to endorse or promote 2055939Snsouch * products derived from this software without specific prior written 2155939Snsouch * permission. 2255939Snsouch * 2355939Snsouch * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 2455939Snsouch * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2555939Snsouch * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2655939Snsouch * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2755939Snsouch * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2855939Snsouch * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2955939Snsouch * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3055939Snsouch * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3155939Snsouch * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3255939Snsouch * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3355939Snsouch * SUCH DAMAGE. 3455939Snsouch * 3555939Snsouch * $Id: pam_start.c 648 2013-03-05 17:54:27Z des $ 3655939Snsouch */ 3755939Snsouch 3855939Snsouch#ifdef HAVE_CONFIG_H 3955939Snsouch# include "config.h" 4055939Snsouch#endif 4155939Snsouch 4255939Snsouch#include <stdlib.h> 4355939Snsouch#include <string.h> 4455939Snsouch#include <unistd.h> 4555939Snsouch 4655939Snsouch#include <security/pam_appl.h> 4755939Snsouch 4855939Snsouch#include "openpam_impl.h" 4955939Snsouch#include "openpam_strlcpy.h" 5055939Snsouch 5155939Snsouch#ifdef _SC_HOST_NAME_MAX 5255939Snsouch#define HOST_NAME_MAX sysconf(_SC_HOST_NAME_MAX) 5355939Snsouch#else 5455939Snsouch#define HOST_NAME_MAX 1024 5555939Snsouch#endif 5655939Snsouch 5755939Snsouch/* 5855939Snsouch * XSSO 4.2.1 5955939Snsouch * XSSO 6 page 89 6055939Snsouch * 6155939Snsouch * Initiate a PAM transaction 6255939Snsouch */ 6355939Snsouch 6455939Snsouchint 6555939Snsouchpam_start(const char *service, 6655939Snsouch const char *user, 6755939Snsouch const struct pam_conv *pam_conv, 6855939Snsouch pam_handle_t **pamh) 6955939Snsouch{ 7055939Snsouch char hostname[HOST_NAME_MAX + 1]; 7155939Snsouch struct pam_handle *ph; 7255939Snsouch int r; 7355939Snsouch 7455939Snsouch ENTER(); 7555939Snsouch if ((ph = calloc(1, sizeof *ph)) == NULL) 7655939Snsouch RETURNC(PAM_BUF_ERR); 7755939Snsouch if ((r = pam_set_item(ph, PAM_SERVICE, service)) != PAM_SUCCESS) 7855939Snsouch goto fail; 7955939Snsouch if (gethostname(hostname, sizeof hostname) != 0) 8055939Snsouch strlcpy(hostname, "localhost", sizeof hostname); 8155939Snsouch if ((r = pam_set_item(ph, PAM_HOST, hostname)) != PAM_SUCCESS) 8255939Snsouch goto fail; 8355939Snsouch if ((r = pam_set_item(ph, PAM_USER, user)) != PAM_SUCCESS) 84 goto fail; 85 if ((r = pam_set_item(ph, PAM_CONV, pam_conv)) != PAM_SUCCESS) 86 goto fail; 87 if ((r = openpam_configure(ph, service)) != PAM_SUCCESS) 88 goto fail; 89 *pamh = ph; 90 openpam_log(PAM_LOG_DEBUG, "pam_start(\"%s\") succeeded", service); 91 RETURNC(PAM_SUCCESS); 92fail: 93 pam_end(ph, r); 94 RETURNC(r); 95} 96 97/* 98 * Error codes: 99 * 100 * =openpam_configure 101 * =pam_set_item 102 * !PAM_SYMBOL_ERR 103 * PAM_BUF_ERR 104 */ 105 106/** 107 * The =pam_start function creates and initializes a PAM context. 108 * 109 * The =service argument specifies the name of the policy to apply, and is 110 * stored in the =PAM_SERVICE item in the created context. 111 * 112 * The =user argument specifies the name of the target user - the user the 113 * created context will serve to authenticate. 114 * It is stored in the =PAM_USER item in the created context. 115 * 116 * The =pam_conv argument points to a =struct pam_conv describing the 117 * conversation function to use; see =pam_conv for details. 118 * 119 * >pam_get_item 120 * >pam_set_item 121 * >pam_end 122 */ 123